Wristwatch



FIG. 1 is a front elevational view of a wristwatch showing my new design;

FIG. 2 is a perspective view of the front and right side thereof;

FIG. 3 is a right side elevation of the wristwatch shown with the watchband in a different assembled position; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a wristwatch, as shown and described. 